Package Servers are unable to download any new or updated packages. The local Altiris Agent log has the following severity 1 error: "Error while downloading package: Server is busy. Package sources request is backing off (-2147467259)."
On the NS, the following information was found:
Based on the IIS and HTTPError logs, it looks like connections are being made, and then are being closed for some reason.
The maximum number of package info requests has been reached. Tune the core setting "MaxConcurrentConfigRequests" for optimal performance. (Max: 50)
As a short-term fix to allow the Package Servers to download new or updated packages, Open the CoreSettings.Config file located in \Program Files\Altiris\Notification Server\Config folder and temporarily increase the the defaultValue for MaxConcurrentConfigRequests to a higher value than the default of 50. After the Package Servers complete their downloads, reduce this value back to the default of 50 or below.
Important: Altiris does not recommend running with this value set higher than 30 (and typically much lower is better) in NS 6.0 SP2 unless specific performance monitoring shows improvement at higher values. Running for a long time with too high of a MaxConcurrentConfigRequests value can have unintended consequences on the NS and could result in database deadlocks and database connection failures.
Note: In NS 6.0 SP3, the default value for MaxConcurrentConfigRequests has been reduced to 10 and there is a new setting called MaxConcurrentPackageInfoRequests, also with a default value of 10, which is used to limit the number of GetPackageInfo requests separately from GetClientPolicies requests. This modification separates the two limits and allows for more granular modifications for performance tuning. Again, increases to these defaults should only be made where specific performance monitoring shows an overall improvement with an increase.
NS 6.0 SP2 with Hotfix 19
More than 15,000 clients running configuration requests every 4 hours and all set to use bandwidth throttling.
Seven Package Servers with 300 or more packages.